Government Policy in Support of Domestic Agriculture: Costs and Benefits, The European Community

Agricultural and Food Policy,

Aerospatial remote sensing as catalyst of an operational marine fishery (halieutic) science

A brief balance of the attainments and limits in the modern halieutic (fishery biology and economy) field is stricken and shows off the gap between the present management structure and the present problems. The surface tuna fishery case is thoroughly studied, considering its specificity and its economical importance. From there, it appears that conclusive strides will be made by halieutic science through the knowledge of the relationship between tuna and its environment. Some tuna environment studies are presented through typical remote sensing examples and introduce the basis of a coherent theory of tuna behaviour which can be schematically summarized by this basic general hypothesis; namely, that if tuna are present in a zone they will be inclined to aggregate close to any anomalies (gradients) of parameters in their environmental sensing field. From there several models are presented in order to assess or forecast surface tuna stock

Contribution à l'étude des surfaces d'aplanissement sur les hautes terres centrales malgaches

CONTRIBUTION TO THE STUDY OF SURFACES OF PLANATION ON THE CENTRAL HIGHLANDS OF MADAGASCAR. - Abstract. - In fact this article is a detailed study accompanying the géomorpholo gical map (11500 000) of the Central Highlands of Madagascar, published by O.R.S.T.O.M in Tananarive. The author' s first is to determine the specific characteristics connected with each level of planation, then to attempt to establish it on a regional basis. In fact, on the one hand, each surface or plane of erosion presents specific characteristics connected with the structure, with the morphological development and the soils; on the other hand, we can distinguish regional patterns wich are due to a combination of characteristics or to preponderance of certain levels. We should note the importance attributed to erosion cycles and recent erosive action in the explanation of the landscapes in the heart of the Highlands.CONTRIBUTION A L'ETUDE DES SURFACES D'APLANISSEMENT SUR LES HAUTES TERRES CENTRALES MALGACHES. - Résumé. - Cet article est en fait une notice détaillée accompagnant la carte géomorpholo ique au 1/500 000 des Hautes Terres centrales de Madagascar, publiée par O.R.S.T.O.M de Tananarive. Les auteurs se sont attachés en premier lieu déterminer les caractères spécifiques liés chaque niveau d'aplanissement, puis à essayer une régionalisation. En effet, d'une part chaque surface d'érosion présente des traits spécifiques liés à la structure, à l'évolution morphologique et aux sols; d'autre part, on peut distinguer des ensembles régionaux dus à l'association ou à la prépondérance de certains niveaux. On notera importance donnée aux cycles et reprises d'érosions récents dans l'explication des paysages au coeur même des Hautes Terres.Bourgeat Fernand, Petit Michel. Contribution à l'étude des surfaces d'aplanissement sur les Hautes Terres centrales malgaches. In: Annales de Géographie, t. 78, n°426, 1969. pp. 158-188